Melbourne mum's killer jailed for 30 years

The fatal bashing of a Melbourne mum with a brick and a golf club was "callous and brutal", a Supreme Court justice has told her killer.

Peter Raymond Brown, 57, was on Thursday jailed for 30 years for murdering Simone Fraser in March after they argued about $3800 he had borrowed to send to a woman overseas he had never met.

Justice John Champion said Brown used four murder weapons in the unprovoked attack, including a plastic bag and duct tape he used to suffocate her between attacks, before dumping her body 300km away in a shallow grave near Mulwala, NSW.

Brown and Mrs Fraser were in a brief relationship previously and reconnected last year when Brown asked to borrow money.

She loaned him $3800, which he sent to his online love in the Philippines.

A psychologist reported Brown developed an "immediate infatuation" with her that led to an "obsessional fixation and ... unhealthy pre-occupation".

Justice Champion said Brown had at one stage stolen $14,000 from his gravely ill father to send to her, and he had sent $26,000 since October 2017.

In early March this year, Mrs Fraser planned to meet Brown so he could repay her, and he claimed he could, despite only having 64 cents in his bank account.

On March 9, when Mrs Fraser arrived at his Rockbank home, he hit her repeatedly over the head with a brick, wrapped her head in a plastic bag and duct tape and hit her multiple times with a golf club until it broke and she stopped making noises.

Brown dragged her body and put it in the boot of her car.

Less than an hour later, while driving her body to Mulwala where he dumped it under a tree in state forest, he tried unsuccessfully to use her credit cards to send more money to his online lover.

Mrs Fraser's decomposing body was discovered by police four days later after Brown told them where to find it.

He pleaded guilty to her murder in August.

During Thursday's sentencing, delayed after Corrections Victoria mistakenly sent another man named Peter Brown to the court, Justice Champion said Brown's money issues frustrated him to the point where anger overwhelmed him, but that did not excuse his crime.

"Your actions were callous and brutal. You intended to kill Mrs Fraser," he said.

"(After a number of blows with two weapons) you gave her no chance to breathe or survive."

Brown must serve 24 years before he's eligible for parole.

Government solicitor Debra Coombs apologised on behalf of Corrections Victoria for the wrong man being taken to court, blaming a junior officer in training and an old computer system for the mistake.